Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfe8fcbdc1168d4…

MALICIOUS

PDF

61.8 KB Created: 2021-01-21 03:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9dd2e4c30bc35c38aef93ded90fdaf81 SHA-1: e079f9278b50f33eab114706d37f5b8ee4e951c2 SHA-256: 2dfe8fcbdc1168d4f1e60177e139f4fe8bccb40fb326ec3c860a70cfeebf6ce0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/aws?utm_term=guided+reading+level+gregor+the+overlander In PDF document text
    • https://cdn.sqhk.co/wevujawej/iag4jj1/rally_fury_extreme_racing_for_pc.pdfIn PDF document text
    • https://site-1167963.mozfiles.com/files/1167963/45640607114.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/oihgjjc/weed_leaf_outline_tattoo.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/iishf7B/chatham_emergency_squad_snow_village.pdfIn PDF document text
    • https://site-1168221.mozfiles.com/files/1168221/83285076696.pdfIn PDF document text
    • https://cdn.sqhk.co/dugubupa/brgF4gf/36508346751.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/ebctEgd/dave_dangerous_download_windows_7.pdfIn PDF document text
    • https://site-1176697.mozfiles.com/files/1176697/rocket_launcher_rod_holder_kayak.pdfIn PDF document text
    • https://site-1188816.mozfiles.com/files/1188816/suzabefefezipu.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/gibBOVV/95561530749.pdfIn PDF document text
    • https://cdn.sqhk.co/tofegejij/bihhxrv/surogowarofigirazewakesaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/takateg/marvel_ultimate_alliance_2_dlc_ps3.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/17902259096.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/59856892181.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/widalutuvexis.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB60B 5000 bytes
SHA-256: 92f56399b7e1c2f12e148c9af5100eaffab39120c1291661e46c8209b9b7a2fb
font_01_sfnt_off0000c708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC708 10388 bytes
SHA-256: 4643bb7e08e0456a05c956fb909ab670c34eda5ada29e18ec34e4299cf279ec8